footer{
    width: 100%;
    height: 0.5rem;
    background: #fff;
    position: fixed;
    bottom: -1px;
    left: 0;
    display: flex;
    justify-content: space-around;
}
footer main{
    width: 0.8rem;
    height: 0.5rem;
    display: flex;
    line-height: 0.22rem;
    flex-direction: column;
    text-align: center;
    color: #d6d6d6;
}
footer main .iconfont {
    font-size: 24px;
    padding: 0.03rem 0;
}

footer main em{
    font-size: 14px;
}
footer main.active{
    color: #2b743a;
}